Click Go & Buy via Buy.com offers the Canon EF 75-300mm f/4-5.6 III Telephoto Zoom Lens, model no. 6473A003, for $122.79 with free shipping. That’s the lowest total price we could find by $2, although most merchants charge over $135. (For further comparison, we saw it for $23 less in May.) Sales tax is added where applicable. It is designed for use with Canon digital SLR cameras and features include a rotating zoom, 58mm filter, and more.